OA1NP Datasheet, PDF (15/31 Pages) STMicroelectronics – Rail-to-rail input and output

OA1NP, OA2NP, OA4NP
Electrical characteristics
Figure 26. Bode diagram for different feedback Figure 27. Bode diagram at 1.8 V supply voltage
values
20
15
Feedback : 1M
10
Vcc=3.3V, Vicm=1.65V, T=25°C
Gain=1
5
Rl=10M, Cl=16pF, Vrl=Vcc/2
0
-5
Feedback : 1M//47pF
-10
Feedback : 100k
-15
-20
10
100
1000
Frequency (Hz)
10000
45
Gain
30
15
0
Phase
-15
T=85°C
-30
-45
10
Vcc=1.8V, Vicm=0.9V
G=101 (10k/1M)
Rl=10M, Cl=60pF, Vrl=Vcc/2
100
1000
Frequency (Hz)
180
150
T=-40°C ¹²⁰
90
60
30
0
-30
T=25°C -60
-90
-120
-150
10000
-180
Figure 28. Bode diagram at 3.3 V supply voltage Figure 29. Bode diagram at 5 V supply voltage
45
Gain
30
15
0
Phase
-15
T=85°C
-30
-45
10
Vcc=3.3V, Vicm=1.65V
G=101 (10k/1M)
Rl=10M, Cl=60pF, Vrl=Vcc/2
100
1000
Frequency (Hz)
180
150
T=-40°C ¹²⁰
90
60
30
0
-30
T=25°C -60
-90
-120
-150
10000
-180
45
Gain
30
15
0
Phase
-15
T=85°C
-30
-45
10
Vcc=5V, Vicm=2.5V
G=101 (10k/1M)
Rl=10M, Cl=60pF, Vrl=Vcc/2
100
1000
Frequency (Hz)
180
150
T=-40°C ¹²⁰
90
60
30
0
-30
T=25°C -60
-90
-120
-150
10000
-180
Figure 30. Gain bandwidth product vs. input
common mode voltage
10
9
8
7
6
5
Vcc=3.3V, Vicm=Vrl
Gain 101 : Rg=10k, Rf=1M
4
Rl=10M, Cl=60pF
T=25°C
3
Measured at 20dB
2
1
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Vicm (V)
Figure 31. Gain vs. input common mode voltage
100
10
10^-2
Recommended resistor to
place between the output
of the op-amp and the
capacitive load
Vcc=3.3V, Vicm=1.65V
Follower configuration
10^-1
10⁰
10¹
10²
10³
Capacitive load (nF)
DocID025993 Rev 2
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